Skip Navigation LinksVolume : Volume 13 No.2 2004

  
  
  
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effects_of_activating_agents_on_the_yield_and_porosity_of_chemically_produced_activated_carbon_from_oil_palm_shell.pdfEFFECTS OF ACTIVATING AGENTS ON THE YIELD AND POROSITY OF CHEMICALLY PRODUCED ACTIVATED CARBON FROM OIL PALM SHELL
  
ABSTRACT:
The effectiveness of ZnCl 2 , H3P04 and KOH as activants in the production of activated carbon from palm shell by chemical method using fluidised bed reactor was studied. Results revealed that H3 P04 was the most suitable activant for the production of activated carbon by this method       

Author: K. H. Ku Hamid and A. Abdul Rahman
Year: 2004
design_of_a_low_cost_digital_lock.pdfDESIGN OF A LOW COST DIGITAL LOCK
  
ABSTRACT:
This paper presents the design of a low cost digital lock using   EDA (Electronic design automation) software. The conventional lock and key  system can be replaced using the proposed digital lock. A coded data word is  stored in the memory of the lock as a master key. When user inserts his password   in the lock, it is compared with the master key and an output signal for the  actuation of the lock is generated if the password is correct. The code word is user programmable, which enhances the security of the lock. The proposed lock is low cost and affordable for the low budget people.     

KEYWORDS: Digital Lock, ASIC, PLD, FPG 

Author: Liakot Ali, Haslina Jaafar, Nurul Amziah Md.Vunus and Wan Zuha Wan Hasan
Year: 2004
criteria_for_solar_drying_projects_in_malaysia.pdfCRITERIA FOR SOLAR DRYING PROJECTS IN MALAYSIA
  
ABSTRACT :
An analysis of solar radiation at several main towns in Malaysia shows   that solar radiation is possible to be used for agricultural drying . Thus several studies have been done to use the abundant solar energy in Malaysia with concern of environmental impact and less energy consumption. Unfortunately there is no expert   system catering for solar designs to assist decision makers. In this paper an interview   with some researchers in the field of solar energy group at Universiti Kebangsaan  Malaysia (UKM) was conducted, in order to get the parameters and criteria of solar  energy use in Malaysia. From the selected parameters it is concluded that it is possible   to use expert system for solar energy in Malaysia, and that is due to many studies,   which showed a range of similarity in most of those parameters. The fluctuated   parameters can be observed since the trend was there. Example of the prototype   expert system is finally presented.       

KEYWORDS : Solar drying, collector performance, solar energy, expert system.       

Author: Bashria, A.A.V, N.M. Adam, M. Daud ,H. Omar3, M. H. M. Ahmad and S.M. Sapuan
Year: 2004
capacitance_tomography_techniques_for_imaging_a_mixture_of_water_and_oil.pdfCAPACITANCE TOMOGRAPHY TECHNIQUES FOR IMAGING A MIXTURE OF WATER AND OIL
  
ABSTRACT :  
Process Tomography Research Group (PROTOM)   Control and Instrumentation Engineering Department Faculty of Electrical Engineering   Universiti Teknologi Malaysia   81310 UTM Skudai.  Johor, Malaysia   (ruzairi@.fke.utm.my)   This paper describes the development of Electrical Capacitance Tomography   (ECT). ECT is a non-intrusive technique for obtaining information about the   distribution of the contents of closed pipes by measuring variations in the dielectric   permittivity of the material inside the pipe. An eight electrode ECT sensor system   with MATLAB software programming was developed. This system can be used   to model the volume ratio of water and oil mixture particularly in a flow horizontalstratified   distribution. Data from the hardware system can be acquired directly   from a computer through data acquisition system (DAS) card that provide the  cross sectional image of water and oil mixture. Image reconstruction algorithm  used in this project was based on Linear Back Projection (LBP). 

KEYWORDS: Electrical Capacitance Tomography, dielectric permittivity, MATLAB   software programming, Image reconstruction algorithm, Linear Back Projection           

Author: Ruzairi Abdul Rahim, Tan Ching Tat, Chan Kok San,Pang Jon Fea and Leong Lai Chean
Year: 2004
behaviour_of_coking_process_in_catalytic_combustion_of_ethyl_acetate_and_benzene_in_air_over_cr-zsm_-5_catalyst.pdfBEHAVIOUR OF COKING PROCESS IN CATALYTIC COMBUSTION OF ETHYL ACETATE IN AND BENZENE IN AIR OVER Cr-ZSM-5 CATALYST
  
ABSTRACT:
The coking behaviour and kinetic study of Cr-ZSM-5 (Si/Al=240)  catalyst during ethyl acetate (EAc) and benzene (Bz) combustion are reported. Coking   kinetic model seeing the process as a combination of monolayer-type and whiskertype   coke accumulations was tested. Coked Cr-ZSM-5 was prepared by exposing  the catalyst to different feed concentrations from 2,000 ppm to 32,000 ppm of each   organic at a GHSV of 3,800 h· 1 between 200°C to 600°C for up to 12 h. Coke formation  was feed concentration-dependent and was at its maximum at around 300°C and  400°C for ethyl acetate and benzene, respectively. Above these temperatures , the  experimental data fitted the coking model. Compared to the whisker-type coking rate constant (kw), the monolayer-type coking rate constant (km) for ethyl acetate   was found to be more sensitive to temperature change while it was vice versa for benzene. The kinetic model also suggested that coking and organic combustion   occurred at different active sites.       

KEYWORDS: voe, ethyl acetate , benzene, Cr-ZSM-5, coking, kinetics

Author: Ahmad Zuhairi Abdullah, Mohamad Zailani Abu Bakar and Subhash Bhatia
Year: 2004